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I have a Lenovo Z40-70 with an Elantech touchpad. Ocassionally, the mouse pointer will either not move much or just completely move around the screen at random when I move my finger. When this happens I pretty much have to leave the system alone for about 20 seconds and then I can start using it again.
I have checked the wiki's section on touchpad sync issues. I do not have a /var/log/messages.log file. I have tried adding options psmouse proto=imps to a modprobe config file for just the touchpad, but using that option seems to disable the multitouch scrolling on the touchpad which is a feature I use heavily so had to change it back almost immediately. I'm also using Awesome for my WM. I have also had this problem happen after a minute of running with the performance governor.
There are no messages in dmesg or journalctl when this issue occurs. This is not a recent development, just that I recently have had time to try to fix it, but have ran out of ideas to try. This issue appears to happen at random, but I'm still trying to see if I can find a common link between when it does happen.
Last edited by js (2015-06-16 18:02:52)
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I have also tried using i3 to see if it was the WM cauing the issue(as per the wiki's suggestion) and have also encountered this issue. This happens maybe once during a few day span. I typically have firefox open, a few terminal windows, pidgin, skype, and maybe chromium(with flash video running).
I will be trying running at performance mode and see if the initial issue happened because the governor enabled and changed the CPU frequency.
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Are there any other logs that I could be looking at besides dmesg, journalct, and xorg.0.log that might provide more information?
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The random mouse movement problem has also affected me on a HP ProBook 450 G1 laptop using the synaptics driver with xfce. I also get nothing in the logs or in the journal.
Since recently switching to the linux-lts kernel from the stock linux kernel so that suspend to disk works again, the random mouse movement problem has gone: perhaps you could try that?
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I've found out that this issue isn't related to Linux at all as I had it happen for the first time in Windows. I'm now working on other causes, with the possibility of having to get warrenty service done.
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Actually I had issues with jumpy trackpad or not moving cursor too. Especially annoying is when it detects two fingers while there is only one finger on the pad.
In my experience I was always ale to solve the problem by grounding myself (i.e. remove static electricity).
As you say it works when you leave the machine alone for some time this might be the same problem as I sometimes have.
So try touching a radiator, water pipe or similar and see if it works. Also grounding the laptop itself by plugging in the power adaptor might help.
I put at button on it. Yes. I wish to press it, but I'm not sure what will happen if I do. (Gune | Titan A.E.)
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